Steam generator



(No Model.) 2 Sheets-Sheet 1.

J. AQBNO; STEAM GENERATOR.

No. 389,503. r Patented Septgll, 1888.

(No Model.) '2 Sheetg-Sheefi 2.

- J. A. BNO.

STEAM GENERATOR. 7

No. 389,503. Patented Sept. 11, 1888.

N. PETERS. Phntoljthogriplmr Washiughru D C.

V UNITED STATES PATENT OFFICE. i

JOSEPH A. ENO, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE END STEAMGENERATOR COMPANY, OF SAME PLACE.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 389,503, datedSeptember 11, 1888.

Application filed January 16, 1888. Serial No. 260,875. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH A. ENO, a citizen of the United States,residing at Newark,

Will enable others skilled in the art to which it TO appertains to makeand use the same, reference being had to the accompanying drawings,

and to letters of reference marked thereon,

which form a part of this specification.

This invention relates to that class of steamr generators adapted toproduce a more perfect circulation within the boiler of said generatingdevice, whereby sediment is prevented from being deposited upon theinner surfaces of said boiler and forming a non-conducting coating whichprevents the access of water to thesheet metal of the boiler, and thusallows the sheet metal to be raised to a very high temperature by theheat from the fire box or chamber of said generator, and thus the. saidsheet metal is quickly burned out.

The object of the invention is to provide a more perfect and rapidcirculation; to reduce the cost of construction; to provide meanswhereby the boiler attachments are prevented 0 from opening at thejoints, caused by the expansion and contraction of the metal forming thesaid attachments; to secure a greater heating-surface for the water, andto increase the steam-generating capacity of the device.

5 Theinventionconsistsin theimprovedsteamgenerator, and in thearrangements and combinations of parts,substantially as will behereinafter set forth, and finally embodied in the clauses of the claim.

0 Referring to the accompanying drawings,em-

braced in two sheets, in which like letters of reference indicatecorresponding parts in each of the several figures, Figure 1 is a sideelevation of the said boiler and the attachments thereof. Fig. 2 is arear view of the same. Fig. 3, Sheet 2, is a front view. Fig. 4 is aplan showing the arrangement of pipes disposed beneath the boiler withinthe fire-chainber thereunder, and Fig. 5 illustrates a modi- 0 ficationin the construction ofa portion ofsaid pipes.

In said drawings, a indicates a suitable boiler for steam-generatingpurposes, having therein an ordinary water and steam chamber, and aseries or collection of longitudinally-dis posed pipes extending fromthe front plate of said boiler to the rear plate thereof, the water insaid boiler having access to said pipes, and the heat from thefire-chamber being adapted to pass through said pipes in the ordinary 6manner. At a point or points near the upper part of said boiler theboiler receives a suitable pipe or pipes, b, which extend downward,substantially as shown in Figs. 1 and 3, and connect with suitableheads, 0, which latter 6 extend or lie in approximately horizontalplanes or positions. I prefer to arrange said heads in pairs,substantially as shown in Fig. 4:, whereby the heads may lie on eachside of the center of the boiler and connect with the vertical pipes 11in such a manner as that the said vertical pipes may lie at the oppositesides of the boiler, so that they will not interfere with the passage ofthe heat through the flue or pipes within the boiler. Each of said 7 5heads connects with a series of longitudinally and horizontally disposedpipes, d, which extend beneath the boiler a within the fire-chamber,substantially as shown in Figs. 1 and 3, and connect at the opposite endof the boiler with a crosshead, d, which is preferably common to all thepipes extending under the boiler. The said cross-head d connects withthe bottom of the boiler or lower part thereof, as shown in Figs. 1 and2, and receives the water 8 therefrom as it circulates, ashereinafter-described. Below the said cross-head is amuddrum orsediment-receptacle, e; but the features thus described are not inthemselves broadly new. 9C)

In the improved device I form the pipes d of the series lyinglongitudinally beneath the boiler after the fashion of spirals, the axisof which lie horizontally and longitudinally beneath the boiler. By thisconstruction I am enabled to get a very large heating-surface relativelyupon the pipes cl within said chamber, so that the water flowingtherethrongh has a greater opportunity to be formed into steam. Thesteam thus being made in larger rec quantities, serves to drive thewater, still in a liquid form, through the pipes at a greatlyacceleratedspeed, so that the body of water within the boiler a is changed moreoften and heated with greater rapidity, and the heat passing through thefire-chamber is more perfectly utilized. At suitable pointsin said piped the same are jointed, as atff, a flange being formed on each sectionofsaid pipes, adapted to be bolted together. By this construction thespiral can be removed or separated from the heads without disturbing thelatter, thus greatly facilitating the repairing operations on thesubstitution of new generating-pipes for those worn out by service.

The spirals need not be of the exact form shown in Fig. 4; nor need thespiral portion of said pipes d be of one integral piece, as showntherein, for I may, if I so desire, form the spiral substantially asillustrated in Fig. 5, in which an individual spiral is shown to becomposed of four pieces coupled together, the spiral thus being of anangular shape or form, rather than the round form shown in Fig. 3; nordo I wish to limit myself to the number of spirals d arranged in theseries, as only one may be employed, or more, although for practicaloperations in the ordinary range of generators I prefer to use the four,as shown.

It will be noticed that by the improved construction the spirals formflues therethrough, by means of which I get a greater heatingsurfacewith the least obstructions to the draft.

The sediment in passing down through the pipe g from the boiler passesover an aperture in the pipe so that the sediment by its own weightdrops into the sediment-receptacle e, and is thus prevented from forminga deposit, crust, or scale within the boiler.

Having thus described the invention, what I claim as new is- 1. lhecombination,\vith the boiler, of pipes I), connected with the upper andforward part of said boiler and descending therefrom at the oppositesides of the boiler, heads 0, each having aseries of pipes connectedtherewith, said pipes being coiled, as at d, and extending horizontallyand longitudinally beneath said boiler and connected with a commoncrosshead, (1, and pipe 9, connecting said head (1 with the lower partof the boiler at the rear thereof, and a mud-drum orsediment-receptacle, all said parts being arranged and combinedsubstantially as set forth.

2. Theimproved generator herein described, combining therein a boiler,a, a series of spirals, d, disposed horizontally and longitudinallybeneath the boiler and forming horizontal and longitudinal finesthereunder within the firechamber, pipes or conduits connecting theupper part of the boiler with said spirals, pipes or conduits connectingthe lower part of said boiler with said spirals and with a mud-drum, andsaid mud-drum, substantially as shown and described.

3. Theimproved generatorherein described, combining a boiler, a, pipeI), head 0, a series of pipes coiled, as at d, and jointed, as atff,head d, connected to the boiler, and a muddrum, said parts beingarranged and combined substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this14th day of January, 1888.

JOSEPH A. ENO.

Witnesses:

CHARLES H. PELL. OSCAR A. MICHEL.

